From what I've seen, this community is lacking in Spec-Evo posts, and I'm here to ammend that with a personal favorite of mine: Biblaridion's Alien Biospheres, an online web series exploring the evolution of life on an alien world, and which also concluded a little less than a year ago to my great sadness.

Fantastic series. Also check out Artifiexian’s channel; he’s the guy he collabbed with in the first video